Question

Question #2fe30

Answer 1

`therefore lambda ~~ 1.73 m`

Explanation:

The relation between frequency, speed and wavelength is given as:

`c = nu xx lambda`

where `nu` is frequency, `c` is speed and `lambda` is wavelength.

Given that:

`nu = 145 Hz`

`c = 251m/s`

And we need to find `lambda`, so,

`lambda = c/nu`

`lambda = 251/ 145` `m/(sHz) =1.731034....`

Hz= number of cycles per seconds =`(cyc l e s)/s` , so unit of `lambda` will be
`m/ s xx s/(cy c l es) = m/ (cyc l e)`

That means wavelength is the length in metres of one cycle/ wave.

`therefore lambda ~~ 1.73 m`